iscsi-ls with lot of lun : * iscsi-ls: double free or corruption (out): 0x00007fff0099b7d0 ***

[aderumier]

previously I can't list more than 256 luns,
now it crashing at lun 276

Target:iqn.1986-03.com.sun:02:7971f46d-bd0e-6289-9240-8090b5b2be9a Portal:10.6.0.38:3260,2
Lun:0 Type:DIRECT_ACCESS (Size:31G)
Lun:1 Type:DIRECT_ACCESS (Size:19G)
Lun:2 Type:DIRECT_ACCESS (Size:14G)
Lun:3 Type:DIRECT_ACCESS (Size:39G)
Lun:8 Type:DIRECT_ACCESS (Size:19G)
Lun:9 Type:DIRECT_ACCESS (Size:19G)
Lun:10 Type:DIRECT_ACCESS (Size:139G)
Lun:14 Type:DIRECT_ACCESS (Size:14G)
Lun:29 Type:DIRECT_ACCESS (Size:19G)
Lun:30 Type:DIRECT_ACCESS (Size:19G)
Lun:31 Type:DIRECT_ACCESS (Size:19G)
Lun:32 Type:DIRECT_ACCESS (Size:39G)
Lun:36 Type:DIRECT_ACCESS (Size:14G)
Lun:102 Type:DIRECT_ACCESS (Size:14G)
Lun:112 Type:DIRECT_ACCESS (Size:15G)
Lun:125 Type:DIRECT_ACCESS (Size:29G)
Lun:135 Type:DIRECT_ACCESS (Size:15G)
Lun:158 Type:DIRECT_ACCESS (Size:14G)
Lun:159 Type:DIRECT_ACCESS (Size:19G)
Lun:166 Type:DIRECT_ACCESS (Size:40G)
Lun:167 Type:DIRECT_ACCESS (Size:14G)
Lun:171 Type:DIRECT_ACCESS (Size:34G)
Lun:173 Type:DIRECT_ACCESS (Size:14G)
Lun:203 Type:DIRECT_ACCESS (Size:14G)
Lun:204 Type:DIRECT_ACCESS (Size:59G)
Lun:205 Type:DIRECT_ACCESS (Size:14G)
Lun:206 Type:DIRECT_ACCESS (Size:59G)
Lun:229 Type:DIRECT_ACCESS (Size:14G)
Lun:231 Type:DIRECT_ACCESS (Size:14G)
Lun:232 Type:DIRECT_ACCESS (Size:19G)
Lun:235 Type:DIRECT_ACCESS (Size:14G)
Lun:236 Type:DIRECT_ACCESS (Size:24G)
Lun:243 Type:DIRECT_ACCESS (Size:14G)
Lun:244 Type:DIRECT_ACCESS (Size:14G)
Lun:245 Type:DIRECT_ACCESS (Size:14G)
Lun:246 Type:DIRECT_ACCESS (Size:14G)
Lun:247 Type:DIRECT_ACCESS (Size:14G)
Lun:248 Type:DIRECT_ACCESS (Size:14G)
Lun:251 Type:DIRECT_ACCESS (Size:14G)
Lun:252 Type:DIRECT_ACCESS (Size:14G)
Lun:253 Type:DIRECT_ACCESS (Size:14G)
Lun:254 Type:DIRECT_ACCESS (Size:14G)
Lun:255 Type:DIRECT_ACCESS (Size:14G)
Lun:256 Type:DIRECT_ACCESS (Size:14G)
Lun:257 Type:DIRECT_ACCESS (Size:14G)
Lun:275 Type:DIRECT_ACCESS (Size:14G)
Lun:276 Type:DIRECT_ACCESS (Size:14G)
*** glibc detected *** iscsi-ls: double free or corruption (out): 0x00007fff0099b7d0 ***
======= Backtrace: =========
/lib/libc.so.6(+0x71bd6)[0x7f57d321dbd6]
/lib/libc.so.6(cfree+0x6c)[0x7f57d322294c]
/usr/lib/libiscsi.so.1(iscsi_destroy_context+0x179)[0x7f57d371ea19]
iscsi-ls[0x401bd7]
/usr/lib/libiscsi.so.1(+0x4ca5)[0x7f57d371dca5]
/usr/lib/libiscsi.so.1(+0x824e)[0x7f57d372124e]
/usr/lib/libiscsi.so.1(iscsi_service+0x32b)[0x7f57d372751b]
iscsi-ls[0x401c7b]
iscsi-ls[0x401fa4]
/lib/libc.so.6(__libc_start_main+0xfd)[0x7f57d31cac8d]
iscsi-ls[0x401359]
======= Memory map: ========
00400000-00403000 r-xp 00000000 fd:00 3114442 /usr/bin/iscsi-ls
00602000-00603000 rw-p 00002000 fd:00 3114442 /usr/bin/iscsi-ls
0255c000-0257d000 rw-p 00000000 00:00 0 [heap]
7f57cc000000-7f57cc021000 rw-p 00000000 00:00 0
7f57cc021000-7f57d0000000 ---p 00000000 00:00 0
7f57d2f96000-7f57d2fac000 r-xp 00000000 fd:00 2146474 /lib/libgcc_s.so.1
7f57d2fac000-7f57d31ab000 ---p 00016000 fd:00 2146474 /lib/libgcc_s.so.1
7f57d31ab000-7f57d31ac000 rw-p 00015000 fd:00 2146474 /lib/libgcc_s.so.1
7f57d31ac000-7f57d3305000 r-xp 00000000 fd:00 2147119 /lib/libc-2.11.3.so
7f57d3305000-7f57d3504000 ---p 00159000 fd:00 2147119 /lib/libc-2.11.3.so
7f57d3504000-7f57d3508000 r--p 00158000 fd:00 2147119 /lib/libc-2.11.3.so
7f57d3508000-7f57d3509000 rw-p 0015c000 fd:00 2147119 /lib/libc-2.11.3.so
7f57d3509000-7f57d350e000 rw-p 00000000 00:00 0
7f57d350e000-7f57d3519000 r-xp 00000000 fd:00 2146568 /lib/libpopt.so.0.0.0
7f57d3519000-7f57d3718000 ---p 0000b000 fd:00 2146568 /lib/libpopt.so.0.0.0
7f57d3718000-7f57d3719000 rw-p 0000a000 fd:00 2146568 /lib/libpopt.so.0.0.0
7f57d3719000-7f57d372f000 r-xp 00000000 fd:00 3105136 /usr/lib/libiscsi.so.1.0.10500
7f57d372f000-7f57d392f000 ---p 00016000 fd:00 3105136 /usr/lib/libiscsi.so.1.0.10500
7f57d392f000-7f57d3930000 rw-p 00016000 fd:00 3105136 /usr/lib/libiscsi.so.1.0.10500
7f57d3930000-7f57d394e000 r-xp 00000000 fd:00 2147115 /lib/ld-2.11.3.so
7f57d3b3d000-7f57d3b40000 rw-p 00000000 00:00 0
7f57d3b4a000-7f57d3b4d000 rw-p 00000000 00:00 0
7f57d3b4d000-7f57d3b4e000 r--p 0001d000 fd:00 2147115 /lib/ld-2.11.3.so
7f57d3b4e000-7f57d3b4f000 rw-p 0001e000 fd:00 2147115 /lib/ld-2.11.3.so
7f57d3b4f000-7f57d3b50000 rw-p 00000000 00:00 0
7fff00988000-7fff0099d000 rw-p 00000000 00:00 0 [stack]
7fff009fe000-7fff00a00000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
Aborted

[sahlberg]

Please try the latest git.

I fixed a bug where a structure from the stack (iscsi->connect_data) was alter attempted to be free()ed, which cause an abort.

[aderumier]

It's ok now , no more error.

Thanks !